# This is a hi.nvim.rs theme specification. All colors are specified in the
# Oklch color space. All color transformations performed by the theme compiler
# are performed in either the Oklch or Oklab color spaces.

# The name of the color scheme. The color scheme will be loadable in (Neo)vim
# through `:colorscheme {name}`.
name = "highlow"

# The kind of the color scheme specified here (either light or dark). The
# inverse will be generated for free (with optional postprocessing specified in
# `inverse`).
#
# This allows the correct scheme to be loaded based on whether (Neo)vim's
# `background` setting is `light` or `dark`.
kind = "light"

[hues]
# Hues to use in the theme. Groups of colors will be generated from these hues,
# using the lightness and chromacity of the color groups specified in `groups`.
# These can be referenced in the `theme` section as `<group_name>.<hue_name>`.
# For example, `fg.red` refers to the `red` hue with the lightness and
# chromacity of `groups.fg`.
red = 15.0
orange = 62.0
yellow = 98.0
green = 135.0
cyan = 223.0
blue = 262.0
purple = 314.0
pink = 346.0

[groups.fg]
# Specify the lightness and chromacity for foreground colors defined in [hues].
lightness = 0.36
chroma = 0.07

[groups.fg_accented]
# Specify the lightness and chromacity for accented foreground colors defined in [hues].
lightness = 0.36
chroma = 0.10

[groups.fg_unaccented]
# Specify the lightness and chromacity for unaccented foreground colors defined in [hues].
lightness = 0.36
chroma = 0.05

[groups.bg]
# Specify the lightness and chromacity for background colors defined in [hues].
lightness = 0.85
chroma = 0.05

[colors]
# Specify colors (with lightness, chromacity, and hue) to use in the theme. The
# color names can be referenced in the `theme` section without a prefix. This
# is useful for naming specific colors that may differ in lightness and
# chromacity from the colors in the `fg` and `bg` sections.
bg =   [ 0.95, 0.016,  77 ]
fg =   [ 0.36, 0.035, 272 ]
grey = [ 0.36, 0.0,    77 ]

# [themes]
# In the themes sections the specific color elements that will be used by the
# (Neo)vim highlights are specified. The elements refer to the colors defined
# above with optional transformations. The available transformations are:
#
# `mix`
# Mix the color with another color. Specify the color name and a mixing factor
# between 0 (keep the original color) and 1 (completely take the other color).
# The colors are mixed in the Oklab color space.
#
# `saturate`
# How much to saturate colors (increase chromacity). Specify a negative value
# to desaturate. Bright colors against a dark background tend to need less
# saturation to be distinctive from each other than dark colors against a
# bright background.
#
# `gamma`
# Perform gamma correction: values between 0 and 1 increase overall brightness
# and increase contrast between lightness levels of dark colors. Values over 1
# decrease overall brightness and increase contrast between lightness levels of
# light colors.
#
# Calculates `new_lightness = lightness^factor`.
#
# - `lighten`
# Lighten or darken a color. Specify a negative value to darken. This lightens
# and darkens relative to the maximal lightness and darkness. For example,
# specifying 0.1 moves a color's lightness 10% towards maximal lightness.
#
# Calculates
# ```
# if factor > 0: new_lightness = lightness + factor * (1 - lightness)
# otherwise:     new_lightness = (1 + factor) * lightness
# ```
#
# - `lighten_multiplier`
# Lighten or darken a color by a multiplier. Specify a value above 1 to lighten
# and below 1 to darken. If multiple colors are modified by the same
# `lighten_multiplier` value, the lighter colors undergo a perceptually bigger
# change.
#
# Using this, lightness can rise or fall below minimal or maximal lightness,
# leading to clamping.
#
# Calculates `new_lightness = factor * lightness`.
#
# - `lighten_absolute`
# Lighten or darken a color independently from its current lightness. Specify a
# negative value to darken. If multiple colors are modified by the same
# `lighten_absolute` value, they change in lightness by the same perceptual
# amount.
#
# Using this, lightness can rise or fall below minimal or maximal lightness,
# leading to clamping.
#
# Calculates `new_lightness = lightness + factor`.

[themes.ui]
# Normal foreground text
fg =          "fg"
fg_dim =      { color = "fg", mix = ["bg", 0.1] }
fg_very_dim = { color = "fg", mix = ["bg", 0.3] }

# Background and background highlights
bg =               "bg"
bg_visual =        { color = "bg", lighten_absolute = -0.15, saturate = 0.04 }
bg_highlight =     { color = "bg", lighten_absolute = -0.15, saturate = 0.03 }
bg_highlight_dim = { color = "bg", lighten_absolute = -0.07, saturate = 0.02 }
bg_border =        { color = "fg" }
bg_gutter =        { color = "bg", lighten_absolute = -0.04, saturate = 0.015 }
bg_dim =           { color = "bg", lighten_absolute = -0.05, saturate = -0.005 }
bg_selected =      { color = "bg", lighten_absolute = -0.1 }

# Floating windows
float_bg =     { color = "bg", lighten_absolute = -0.02, saturate = 0.01 }
float_fg =     { color = "fg", lighten_absolute = -0.02 }
float_border = "fg"

# Popup menu (e.g., tab completion)
pmenu_bg =          { color = "bg", lighten_absolute = -0.1, saturate = 0.03 }
pmenu_fg =          { color = "fg", lighten_absolute = -0.1 }
pmenu_fg_selected = { color = "fg", lighten_absolute = -0.1, saturate = 0.03 }
pmenu_bg_selected = { color = "bg", lighten_absolute = -0.25, saturate = 0.08 }

special = { color = "fg.purple", lighten_absolute = -0.05, saturate = 0.02 }
nontext = { color = "grey", mix = ["bg", 0.15] }

[themes.syn]
string =      "fg.green"
number =      "fg.orange"
constant =    "fg.blue"
regex =       "fg.yellow"
preproc =     "fg.yellow"
type =        "fg.pink"
variable =    "fg"
identifier =  "fg"
parameter =   "fg_unaccented.blue"
function =    "fg_unaccented.blue"
constructor = "fg_unaccented.orange"
statement =   "fg_unaccented.purple"
keyword =     "fg_unaccented.purple"
operator =    "fg_unaccented.yellow"
deprecated =  { color = "grey", lighten_absolute = 0.05 }
comment =     "grey"
special =     "fg.yellow"
punctuation = { color = "grey", lighten_absolute = 0.05 }

[themes.diagnostics]
error =   { color = "fg_accented.red" }
warning = { color = "fg_accented.orange" }
info =    { color = "fg_accented.blue" }
hint =    { color = "fg_accented.blue", saturate = -0.05 }
ok =      { color = "fg_accented.green" }

[themes.vcs]
removed = "fg.red"
added =   "fg.green"
changed = "fg.yellow"

[themes.diff]
removed = "bg.red"
added =   "bg.green"
changed = "bg.yellow"
text =    "bg"

[inverse]
# Color post-processing for the inverse color theme. This is performed after
# inverting the lightness of all colors. The transformations are the same as
# documented in the themes section.
saturate = -0.03
lighten_absolute = 0.08

[highlights]
# Specify (Neo)vim highlight groups. The default groups are available at
# https://github.com/tomcur/hi-nvim-rs
StatusLine = { fg = "ui.bg", bg = "ui.fg" }
StatusLineNC = { fg = "ui.bg_dim", bg = "ui.fg_very_dim" }